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中国化学快报（英文版）
中国化学快报（英文版）

梁晓天

月刊

1001-8417

cclbj@imm.ac.cn

010-63165638

100050

北京市先农坛街1号

中国化学快报（英文版）/Journal Chinese Chemical LettersCSCDCSTPCD北大核心SCI
查看更多>>本刊是由中国科协主管、中国化学会主办、中国医学科学院药物所承办的学术期刊，是由著名化学家梁晓天院士主编。是中国化学界通向世界的窗口，内容覆盖化学全领域。本刊的办刊宗旨是“新、快、准”，我们将坚持这个宗旨，力求及时反映化学研究中各个相关领域内的最新进展及热点问题，主要读者群是科研人员、研究生、大学教师。现已被国内外多家数据库收录，如SCI　Search、Chemical Abstract、Research Alert、Chemistry Citation Index、《日本科技文献速报》、万方数据数字化期刊群、中国学术期刊过刊全文数据库、中国学术期刊（光盘版）、中国学术期刊文摘、中文期刊全文数据库、俄罗斯Рж期刊源等。
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    Epitaxial growth of Cu2-xSe on Cu(220)crystal plane as high property anode for sodium storage

    Zhijia ZhangShihao SunYuefang ChenYanhao Wei...
    519-523页
    查看更多>>摘要：Three-dimentional(3D)transition metal selenides with sufficient channels could produce significant su-periority on enhancing reaction kinetics for sodium-ion batteries.However,the thorough exploration of 3D architecture with a facile strategy is still challenging.Here we report that a polycrystalline Cu2-xSe film was epitaxial grown on(220)facets-exposed Cu by direct selenization of a nanoporous Cu skeleton,which is obtained by dealloying rolled CuMn@Cu alloy foil.Density functional theory calculation result shows strong adsorption energy for Se atoms on Cu(220)planes during selenization reaction,render-ing a low energy consumption.By virtue of this core-shell 3D nanoporous architecture to offer abundant active sites and endow fast electron/ion transportation,the nanoporous Cu2-xSe@Cu-0.15 composite elec-trode exhibits remarkable sodium-ion storage properties with high reversible capacity of 950.6 μAh/cm2 at 50 μA/cm2,suprior rate capability of 457.6 μAh/cm2 at 500 μA/cm2,as well as an ultra-long stability at a high current density.Mechanism investigation reveals that the electrochemical reaction is a typical conversion-type reaction with different intermediates.This novel electrode synthetic strategy provides useful instructions to design the high-performance anode material for sodium-ion batteries.
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    Keplerate polyoxomolybdate nanoball mediated controllable preparation of metal-doped molybdenum disulfide for electrocatalytic hydrogen evolution in acidic and alkaline media

    Ping WangTing WangMing XuZe Gao...
    524-528页
    查看更多>>摘要：Rationally designed novel cost-effective hydrogen evolution reaction(HER)electrocatalysts with con-trolled surface composition and advanced structural superiority is extremely critical to optimize the HER performance.Polyoxometalates(POMs)with structural diversity and adjustable element composi-tions represent a promising precursor for rational design and preparation of HER electrocatalysts.Herein,a series of transition metal-doped MoS2 materials with different surface engineered structures(Fe,Cr,V doping and S vacancies)(M-MoS2/CC,M=Fe,Cr and V)were fabricated by a simple hydrothermal-vulcanization strategy using Keplerate polyoxomolybdate nanoball({Mo72Fe30},{Mo72Cr30},{Mo72V30},{Mo132})as precursors.The enlarged interlayer spacing as well as the integration of homogeneous transi-tion metal doping and abundant sulfur vacancies endows prepared M-MoS2/CC with superior HER elec-trocatalytic performance and excellent long-term working stability in both acidic and alkaline media.The optimized Fe-MoS2/CC afford current densities of 10 and 50mA/cm2 at overpotentials of 188/272mV and 194/394mV in 0.5mol/L H2SO4 and 1.0mol/L KOH aqueous solution,respectively,outperforming most of reported typical transition metal sulfide-based catalysts.This work represents an important breakthrough for POMs-mediated highly efficient transition metal sulfide-based HER electrocatalysts with wide range pH activity and may provide new options for the rational design of promising HER electrocatalysts and beyond.
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    Generating electron spin qubit in metal-organic frameworks via spontaneous hydrolysis

    Xian-Fa JiangChongyun ShaoZhongwen OuyangZhao-Bo Hu...
    529-533页
    查看更多>>摘要：Qubit,as the basic unit of quantum operations,has at least two quantum states for superposition.Diamond itself has no superimposable quantum states,but after injecting N atoms,the resulted nitrogen-vacancy centers form excellent-performance qubits.For the same purpose,we can also obtain qubits by modifying the matrix without effective quantum states.HKUST-1({Cu3(BTC)2(H2O)3},BTC=1,3,5-benzene-tricarboxylate)with S=0 ground state is electron paramagnetic resonance(EPR)silent,so it is not a qubit candidate.However,the spontaneously hydrolyzed HKUST-1 produces dilute uncoupled CuⅡ ions with S=1/2.In this paper,we utilized the hydrolysis products of HKUST-1 to obtain qubits and assembled a core-shell structural HKUST-1@ZIF-8 by ZIF-8({Zn(mim)2},mim=2-methylimidazole)coated over HKUST-1 for controlling the hydrolysis.The experimental results clearly show that the qubits come from hydrolyzed CuⅡ ions.Furthermore,the dilute uncoupled CuⅡ ions in this assembly can effectively reduce the decoherence of qubits.The EPR studies show that the T2 of this compound is 1067 ns at 10 K.
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    Break of thermal equilibrium between optical and acoustic phonon branches of CsPbI3 under continuous-wave light excitation and cryogenic temperature

    Rongliang DengYihang ChenXiaotong FanGuolong Chen...
    534-537页
    查看更多>>摘要：The kinetic of low-temperature carrier and lattice of lead-halide perovskite is yet to be fully understood.In this work,we investigate the steady-state photoluminescences(PLs)of CsPbI3 at the environmental temperature(Te)ranging from 20 K to 300 K,and observed anomalous behaviors at cryogenic tempera-tures:The carrier temperature(Tc)of pure CsPbI3 exhibits a negative correlation with Te,accompanied by an expansion in Urbach tails of absorption spectra(Abs.)and excessive red-shifts at peak energy of PLs.These phenomena are also observed in those samples containing a certain amount of Cs4PbI6,but to a lesser extent and occurs at lower temperatures.It is attributed to the intensified hot phonon bottleneck effect(HPB)in CsPbI3 at cryogenic Te,which hinders the energy transfer from hot carriers,via longi-tudinal optics(LO)phonons to longitudinal acoustic(LA)phonons,to the ambient.For samples under continuous-wave laser excitation,in specific,the barrier induced by the enhanced HPB at low Te pre-vents the effective thermalization among carriers,LO and LA phonons,which,therefore,form thermally isolated ensembles with different temperatures.At cryogenic Te range,the elevated temperatures of car-rier and LO phonon expand the high-energy side of PLs and the low-energy tail of Abs.,respectively.For those samples in which the CsPbI3 is mixed with Cs4PbI6,the interfacial LO-LO interaction across them provides a bypass for heat dissipation,mitigating the heat accumulation in LO-phonons of CsPbI3.The results suggest that a strong HPB effect may break the thermal equilibrium among different branches of phonons in the lattice under certain extreme conditions.
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    Zero thermal expansion in Cs2W3O10

    Juan GuoMingyuan FangQingsong LiuXiao Ren...
    538-541页
    查看更多>>摘要：Zero thermal expansion materials are important for the practical applications due to their shape stability as changing temperature.The reported concept of average atomic volume is an available method to hunt new zero thermal expansion materials.Here,according to this concept,a tetragonal tungstate Cs2W3O10 with zero expansion has been found.There is no structure phase transition as increasing temperature from 150 K to 573 K.The coefficient of thermal expansion of axes and volume are αa=0.0074×10-6 K -1,αc=1.63×10-6 K -1,and αV=1.60×10-6 K-1,respectively,in the temperature range of 150～573 K.The temperature-and pressure-dependent Raman spectra reveal that the vibrations of WO6 octahedra libration modes with positive total anharmonicity and W-O-W bending mode with negative Grüneisen parameter are possibly the origin of zero thermal expansion in Cs2W3O10.
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